ccs-patch/patches/ccs-patch-2.6.15-ubuntu-6.06.diff

This is TOMOYO Linux patch for Ubuntu 6.06.

Source code for this patch is "apt-get install linux-source-2.6.15"
---
 arch/alpha/kernel/ptrace.c      |    7 ++
 arch/ia64/ia32/sys_ia32.c       |    7 ++
 arch/ia64/kernel/ptrace.c       |    7 ++
 arch/m32r/kernel/ptrace.c       |    7 ++
 arch/mips/kernel/ptrace32.c     |    7 ++
 arch/powerpc/kernel/ptrace32.c  |    7 ++
 arch/s390/kernel/ptrace.c       |    7 ++
 arch/sparc/kernel/ptrace.c      |    9 +++
 arch/sparc64/kernel/ptrace.c    |    9 +++
 arch/x86_64/ia32/ptrace32.c     |    7 ++
 fs/Kconfig                      |    2 
 fs/Makefile                     |    2 
 fs/attr.c                       |   19 ++++++
 fs/compat.c                     |   15 +++++
 fs/exec.c                       |   21 +++++++
 fs/fcntl.c                      |    8 ++
 fs/ioctl.c                      |   11 +++
 fs/namei.c                      |   60 +++++++++++++++++++++
 fs/namespace.c                  |   50 +++++++++++++++++-
 fs/open.c                       |   30 ++++++++++
 fs/proc/Makefile                |    3 +
 fs/proc/proc_misc.c             |    5 +
 include/linux/init_task.h       |    4 +
 include/linux/sched.h           |    8 ++
 kernel/compat.c                 |    7 ++
 kernel/kexec.c                  |    7 ++
 kernel/kmod.c                   |    5 +
 kernel/module.c                 |   13 +++-
 kernel/ptrace.c                 |    7 ++
 kernel/sched.c                  |    7 ++
 kernel/signal.c                 |   21 +++++++
 kernel/sys.c                    |   21 +++++++
 kernel/sysctl.c                 |  111 ++++++++++++++++++++++++++++++++++++++++
 kernel/time.c                   |   15 +++++
 net/core/datagram.c             |   11 +++
 net/ipv4/inet_connection_sock.c |    7 ++
 net/ipv4/tcp_ipv4.c             |    7 ++
 net/ipv4/udp.c                  |   11 +++
 net/ipv6/tcp_ipv6.c             |   11 +++
 net/ipv6/udp.c                  |   11 +++
 net/socket.c                    |   43 ++++++++++++++-
 net/unix/af_unix.c              |    8 ++
 42 files changed, 626 insertions(+), 9 deletions(-)

--- linux-2.6.15-53.75.orig/arch/alpha/kernel/ptrace.c
+++ linux-2.6.15-53.75/arch/alpha/kernel/ptrace.c
@@ -20,6 +20,9 @@
 #include <asm/pgtable.h>
 #include <asm/system.h>
 #include <asm/fpu.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 #include "proto.h"
 
@@ -261,6 +264,10 @@ do_sys_ptrace(long request, long pid, lo
        unsigned long tmp;
        size_t copied;
        long ret;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        lock_kernel();
        DBG(DBG_MEM, ("request=%ld pid=%ld addr=0x%lx data=0x%lx\n",
--- linux-2.6.15-53.75.orig/arch/ia64/ia32/sys_ia32.c
+++ linux-2.6.15-53.75/arch/ia64/ia32/sys_ia32.c
@@ -57,6 +57,9 @@
 #include <asm/types.h>
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 #include "ia32priv.h"
 
@@ -1758,6 +1761,10 @@ sys32_ptrace (int request, pid_t pid, un
        struct task_struct *child;
        unsigned int value, tmp;
        long i, ret;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        lock_kernel();
        if (request == PTRACE_TRACEME) {
--- linux-2.6.15-53.75.orig/arch/ia64/kernel/ptrace.c
+++ linux-2.6.15-53.75/arch/ia64/kernel/ptrace.c
@@ -29,6 +29,9 @@
 #ifdef CONFIG_PERFMON
 #include <asm/perfmon.h>
 #endif
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 #include "entry.h"
 
@@ -1418,6 +1421,10 @@ sys_ptrace (long request, pid_t pid, uns
        struct task_struct *child;
        struct switch_stack *sw;
        long ret;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        lock_kernel();
        ret = -EPERM;
--- linux-2.6.15-53.75.orig/arch/m32r/kernel/ptrace.c
+++ linux-2.6.15-53.75/arch/m32r/kernel/ptrace.c
@@ -33,6 +33,9 @@
 #include <asm/system.h>
 #include <asm/processor.h>
 #include <asm/mmu_context.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 /*
  * Get the address of the live pt_regs for the specified task.
@@ -760,6 +763,10 @@ asmlinkage long sys_ptrace(long request,
 {
        struct task_struct *child;
        int ret;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        lock_kernel();
        ret = -EPERM;
--- linux-2.6.15-53.75.orig/arch/mips/kernel/ptrace32.c
+++ linux-2.6.15-53.75/arch/mips/kernel/ptrace32.c
@@ -35,6 +35,9 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/bootinfo.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 int ptrace_getregs (struct task_struct *child, __s64 __user *data);
 int ptrace_setregs (struct task_struct *child, __s64 __user *data);
@@ -50,6 +53,10 @@ asmlinkage int sys32_ptrace(int request,
 {
        struct task_struct *child;
        int ret;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
 #if 0
        printk("ptrace(r=%d,pid=%d,addr=%08lx,data=%08lx)\n",
--- linux-2.6.15-53.75.orig/arch/powerpc/kernel/ptrace32.c
+++ linux-2.6.15-53.75/arch/powerpc/kernel/ptrace32.c
@@ -33,6 +33,9 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/system.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 #include "ptrace-common.h"
 
@@ -46,6 +49,10 @@ long compat_sys_ptrace(int request, int 
 {
        struct task_struct *child;
        int ret = -EPERM;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        lock_kernel();
        if (request == PTRACE_TRACEME) {
--- linux-2.6.15-53.75.orig/arch/s390/kernel/ptrace.c
+++ linux-2.6.15-53.75/arch/s390/kernel/ptrace.c
@@ -41,6 +41,9 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 #ifdef CONFIG_S390_SUPPORT
 #include "compat_ptrace.h"
@@ -711,6 +714,10 @@ sys_ptrace(long request, long pid, long 
        struct task_struct *child;
        int ret;
 
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
        lock_kernel();
 
        if (request == PTRACE_TRACEME) {
--- linux-2.6.15-53.75.orig/arch/sparc/kernel/ptrace.c
+++ linux-2.6.15-53.75/arch/sparc/kernel/ptrace.c
@@ -23,6 +23,9 @@
 #include <asm/pgtable.h>
 #include <asm/system.h>
 #include <asm/uaccess.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 #define MAGIC_CONSTANT 0x80000000
 
@@ -267,6 +270,12 @@ asmlinkage void do_ptrace(struct pt_regs
        unsigned long addr2 = regs->u_regs[UREG_I4];
        struct task_struct *child;
        int ret;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE)) {
+               pt_error_return(regs, EPERM);
+               return;
+       }
+       /***** TOMOYO Linux end. *****/
 
        lock_kernel();
 #ifdef DEBUG_PTRACE
--- linux-2.6.15-53.75.orig/arch/sparc64/kernel/ptrace.c
+++ linux-2.6.15-53.75/arch/sparc64/kernel/ptrace.c
@@ -32,6 +32,9 @@
 #include <asm/spitfire.h>
 #include <asm/page.h>
 #include <asm/cpudata.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 /* Returning from ptrace is a bit tricky because the syscall return
  * low level code assumes any value returned which is negative and
@@ -176,6 +179,12 @@ asmlinkage void do_ptrace(struct pt_regs
        unsigned long addr2 = regs->u_regs[UREG_I4];
        struct task_struct *child;
        int ret;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE)) {
+               pt_error_return(regs, EPERM);
+               return;
+       }
+       /***** TOMOYO Linux end. *****/
 
        if (test_thread_flag(TIF_32BIT)) {
                addr &= 0xffffffffUL;
--- linux-2.6.15-53.75.orig/arch/x86_64/ia32/ptrace32.c
+++ linux-2.6.15-53.75/arch/x86_64/ia32/ptrace32.c
@@ -27,6 +27,9 @@
 #include <asm/debugreg.h>
 #include <asm/i387.h>
 #include <asm/fpu32.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 /* determines which flags the user has access to. */
 /* 1 = access 0 = no access */
@@ -233,6 +236,10 @@ asmlinkage long sys32_ptrace(long reques
        void __user *datap = compat_ptr(data);
        int ret;
        __u32 val;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        switch (request) { 
        default:
--- linux-2.6.15-53.75.orig/fs/Kconfig
+++ linux-2.6.15-53.75/fs/Kconfig
@@ -1910,5 +1910,7 @@ endmenu
 
 source "fs/nls/Kconfig"
 
+source "fs/Kconfig.ccs"
+
 endmenu
 
--- linux-2.6.15-53.75.orig/fs/Makefile
+++ linux-2.6.15-53.75/fs/Makefile
@@ -108,3 +108,5 @@ obj-$(CONFIG_CONFIGFS_FS)   += configfs/
 obj-$(CONFIG_OCFS2_FS)         += ocfs2/
 obj-$(CONFIG_UNION_FS)          += unionfs/
 obj-$(CONFIG_DAZUKO)           += dazuko/
+
+include $(srctree)/fs/Makefile-2.6.ccs
--- linux-2.6.15-53.75.orig/fs/attr.c
+++ linux-2.6.15-53.75/fs/attr.c
@@ -15,6 +15,9 @@
 #include <linux/quotaops.h>
 #include <linux/security.h>
 #include <linux/time.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 /* Taken over from the old code... */
 
@@ -153,12 +156,28 @@ int notify_change(struct dentry * dentry
 
        if (inode->i_op && inode->i_op->setattr) {
                error = security_inode_setattr(dentry, attr);
+               /***** TOMOYO Linux start. *****/
+               if (!error && (ia_valid & ATTR_MODE) &&
+                   !ccs_capable(CCS_SYS_CHMOD))
+                       error = -EPERM;
+               if (!error && (ia_valid & (ATTR_UID | ATTR_GID)) &&
+                   !ccs_capable(CCS_SYS_CHOWN))
+                       error = -EPERM;
+               /***** TOMOYO Linux end. *****/
                if (!error)
                        error = inode->i_op->setattr(dentry, attr);
        } else {
                error = inode_change_ok(inode, attr);
                if (!error)
                        error = security_inode_setattr(dentry, attr);
+               /***** TOMOYO Linux start. *****/
+               if (!error && (ia_valid & ATTR_MODE) &&
+                   !ccs_capable(CCS_SYS_CHMOD))
+                       error = -EPERM;
+               if (!error && (ia_valid & (ATTR_UID | ATTR_GID)) &&
+                   !ccs_capable(CCS_SYS_CHOWN))
+                       error = -EPERM;
+               /***** TOMOYO Linux end. *****/
                if (!error) {
                        if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
                            (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid))
--- linux-2.6.15-53.75.orig/fs/compat.c
+++ linux-2.6.15-53.75/fs/compat.c
@@ -52,6 +52,9 @@
 #include <asm/uaccess.h>
 #include <asm/mmu_context.h>
 #include <asm/ioctls.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 /*
  * Not all architectures have sys_utime, so implement this in terms
@@ -353,6 +356,10 @@ asmlinkage long compat_sys_ioctl(unsigne
 
        /* RED-PEN how should LSM module know it's handling 32bit? */
        error = security_file_ioctl(filp, cmd, arg);
+       /***** TOMOYO Linux start. *****/
+       if (!error)
+               error = ccs_check_ioctl_permission(filp, cmd, arg);
+       /***** TOMOYO Linux end. *****/
        if (error)
                goto out_fput;
 
@@ -377,6 +384,12 @@ asmlinkage long compat_sys_ioctl(unsigne
                /*FALL THROUGH*/
 
        default:
+               /***** TOMOYO Linux start. *****/
+               if (!ccs_capable(CCS_SYS_IOCTL)) {
+                       error = -EPERM;
+                       goto out_fput;
+               }
+               /***** TOMOYO Linux end. *****/
                if (filp->f_op && filp->f_op->compat_ioctl) {
                        error = filp->f_op->compat_ioctl(filp, cmd, arg);
                        if (error != -ENOIOCTLCMD)
@@ -1480,7 +1493,7 @@ int compat_do_execve(char * filename,
        if (retval < 0)
                goto out;
 
-       retval = search_binary_handler(bprm, regs);
+       retval = search_binary_handler_with_transition(bprm, regs);
        if (retval >= 0) {
                free_arg_pages(bprm);
 
--- linux-2.6.15-53.75.orig/fs/exec.c
+++ linux-2.6.15-53.75/fs/exec.c
@@ -57,6 +57,10 @@
 #include <linux/kmod.h>
 #endif
 
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
+
 int core_uses_pid;
 char core_pattern[65] = "core";
 int suid_dumpable = 0;
@@ -139,6 +143,13 @@ asmlinkage long sys_uselib(const char __
        if (error)
                goto exit;
 
+       /***** TOMOYO Linux start. *****/
+       /* 01 means "read". */
+       error = ccs_check_open_permission(nd.dentry, nd.mnt, 01);
+       if (error)
+               goto exit;
+       /***** TOMOYO Linux end. *****/
+
        file = nameidata_to_filp(&nd, O_RDONLY);
        error = PTR_ERR(file);
        if (IS_ERR(file))
@@ -488,6 +499,13 @@ struct file *open_exec(const char *name)
                        int err = vfs_permission(&nd, MAY_EXEC);
                        if (!err && !(inode->i_mode & 0111))
                                err = -EACCES;
+                       /***** TOMOYO Linux start. *****/
+                       if (!err && (current->ccs_flags &
+                                    CCS_CHECK_READ_FOR_OPEN_EXEC))
+                               /* 01 means "read". */
+                               err = ccs_check_open_permission(nd.dentry,
+                                                               nd.mnt, 01);
+                       /***** TOMOYO Linux end. *****/
                        file = ERR_PTR(err);
                        if (!err) {
                                file = nameidata_to_filp(&nd, O_RDONLY);
@@ -1197,7 +1215,8 @@ int do_execve(char * filename,
        if (retval < 0)
                goto out;
 
-       retval = search_binary_handler(bprm,regs);
+       retval = search_binary_handler_with_transition(bprm, regs);
+
        if (retval >= 0) {
                free_arg_pages(bprm);
 
--- linux-2.6.15-53.75.orig/fs/fcntl.c
+++ linux-2.6.15-53.75/fs/fcntl.c
@@ -21,6 +21,9 @@
 #include <asm/poll.h>
 #include <asm/siginfo.h>
 #include <asm/uaccess.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 void fastcall set_close_on_exec(unsigned int fd, int flag)
 {
@@ -211,6 +214,11 @@ static int setfl(int fd, struct file * f
        if (!(arg & O_APPEND) && IS_APPEND(inode))
                return -EPERM;
 
+       /***** TOMOYO Linux start. *****/
+       if (!(arg & O_APPEND) && ccs_check_rewrite_permission(filp))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
+
        /* O_NOATIME can only be set by the owner or superuser */
        if ((arg & O_NOATIME) && !(filp->f_flags & O_NOATIME))
                if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
--- linux-2.6.15-53.75.orig/fs/ioctl.c
+++ linux-2.6.15-53.75/fs/ioctl.c
@@ -15,6 +15,9 @@
 
 #include <asm/uaccess.h>
 #include <asm/ioctls.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 static long do_ioctl(struct file *filp, unsigned int cmd,
                unsigned long arg)
@@ -23,6 +26,10 @@ static long do_ioctl(struct file *filp, 
 
        if (!filp->f_op)
                goto out;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_IOCTL))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        if (filp->f_op->unlocked_ioctl) {
                error = filp->f_op->unlocked_ioctl(filp, cmd, arg);
@@ -167,6 +174,10 @@ asmlinkage long sys_ioctl(unsigned int f
                goto out;
 
        error = security_file_ioctl(filp, cmd, arg);
+       /***** TOMOYO Linux start. *****/
+       if (!error)
+               error = ccs_check_ioctl_permission(filp, cmd, arg);
+       /***** TOMOYO Linux end. *****/
        if (error)
                goto out_fput;
 
--- linux-2.6.15-53.75.orig/fs/namei.c
+++ linux-2.6.15-53.75/fs/namei.c
@@ -34,6 +34,10 @@
 
 #define ACC_MODE(x) ("\000\004\002\006"[(x)&O_ACCMODE])
 
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
+
 /* [Feb-1997 T. Schoebel-Theuer]
  * Fundamental changes in the pathname lookup mechanisms (namei)
  * were necessary because of omirr.  The reason is that omirr needs
@@ -1488,6 +1492,13 @@ int may_open(struct nameidata *nd, int a
                if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
                        return -EPERM;
 
+       /***** TOMOYO Linux start. *****/
+       /* includes O_APPEND and O_TRUNC checks */
+       error = ccs_check_open_permission(dentry, nd->mnt, flag);
+       if (error)
+               return error;
+       /***** TOMOYO Linux end. *****/
+
        /*
         * Ensure there are no outstanding leases on the file.
         */
@@ -1519,6 +1530,9 @@ int may_open(struct nameidata *nd, int a
        return 0;
 }
 
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo_vfs.h>
+/***** TOMOYO Linux end. *****/
 /*
  *     open_namei()
  *
@@ -1594,6 +1608,11 @@ do_last:
        if (!path.dentry->d_inode) {
                if (!IS_POSIXACL(dir->d_inode))
                        mode &= ~current->fs->umask;
+               /***** TOMOYO Linux start. *****/
+               error = ccs_check_mknod_permission(dir->d_inode, path.dentry,
+                                                  nd->path.mnt, mode, 0);
+               if (!error)
+               /***** TOMOYO Linux end. *****/
                error = vfs_create(dir->d_inode, path.dentry, mode, nd);
                up(&dir->d_inode->i_sem);
                dput(nd->dentry);
@@ -1781,6 +1800,12 @@ asmlinkage long sys_mknod(const char __u
        if (!IS_POSIXACL(nd.dentry->d_inode))
                mode &= ~current->fs->umask;
        if (!IS_ERR(dentry)) {
+               /***** TOMOYO Linux start. *****/
+               error = ccs_check_mknod_permission(nd.path.dentry->d_inode,
+                                                  dentry, nd.path.mnt, mode,
+                                                  new_decode_dev(dev));
+               if (!error)
+               /***** TOMOYO Linux end. *****/
                switch (mode & S_IFMT) {
                case 0: case S_IFREG:
                        error = vfs_create(nd.dentry->d_inode,dentry,mode,&nd);
@@ -1849,6 +1874,12 @@ asmlinkage long sys_mkdir(const char __u
                if (!IS_ERR(dentry)) {
                        if (!IS_POSIXACL(nd.dentry->d_inode))
                                mode &= ~current->fs->umask;
+                       /***** TOMOYO Linux start. *****/
+                       error = ccs_check_mkdir_permission(nd.dentry->d_inode,
+                                                          dentry, nd.mnt,
+                                                          mode);
+                       if (!error)
+                       /***** TOMOYO Linux end. *****/
                        error = vfs_mkdir(nd.dentry->d_inode, dentry, mode);
                        dput(dentry);
                }
@@ -1952,6 +1983,11 @@ asmlinkage long sys_rmdir(const char __u
        dentry = lookup_hash(&nd);
        error = PTR_ERR(dentry);
        if (!IS_ERR(dentry)) {
+               /***** TOMOYO Linux start. *****/
+               error = ccs_check_rmdir_permission(nd.dentry->d_inode, dentry,
+                                                  nd.mnt);
+               if (!error)
+               /***** TOMOYO Linux end. *****/
                error = vfs_rmdir(nd.dentry->d_inode, dentry);
                dput(dentry);
        }
@@ -2027,6 +2063,11 @@ asmlinkage long sys_unlink(const char __
                inode = dentry->d_inode;
                if (inode)
                        atomic_inc(&inode->i_count);
+               /***** TOMOYO Linux start. *****/
+               error = ccs_check_unlink_permission(nd.dentry->d_inode, dentry,
+                                                   nd.mnt);
+               if (!error)
+               /***** TOMOYO Linux end. *****/
                error = vfs_unlink(nd.dentry->d_inode, dentry);
        exit2:
                dput(dentry);
@@ -2088,6 +2129,12 @@ asmlinkage long sys_symlink(const char _
                dentry = lookup_create(&nd, 0);
                error = PTR_ERR(dentry);
                if (!IS_ERR(dentry)) {
+                       /***** TOMOYO Linux start. *****/
+                       error = ccs_check_symlink_permission(nd.dentry->d_inode,
+                                                            dentry, nd.mnt,
+                                                            from);
+                       if (!error)
+                       /***** TOMOYO Linux end. *****/
                        error = vfs_symlink(nd.dentry->d_inode, dentry, from, S_IALLUGO);
                        dput(dentry);
                }
@@ -2170,6 +2217,12 @@ asmlinkage long sys_link(const char __us
        new_dentry = lookup_create(&nd, 0);
        error = PTR_ERR(new_dentry);
        if (!IS_ERR(new_dentry)) {
+               /***** TOMOYO Linux start. *****/
+               error = ccs_check_link_permission(old_nd.dentry,
+                                                 nd.dentry->d_inode,
+                                                 new_dentry, nd.mnt);
+               if (!error)
+               /***** TOMOYO Linux end. *****/
                error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry);
                dput(new_dentry);
        }
@@ -2390,6 +2443,13 @@ static inline int do_rename(const char *
        if (new_dentry == trap)
                goto exit5;
 
+       /***** TOMOYO Linux start. *****/
+       error = ccs_check_rename_permission(old_dir->d_inode, old_dentry,
+                                           new_dir->d_inode, new_dentry,
+                                           newnd.mnt);
+       if (!error)
+       /***** TOMOYO Linux end. *****/
+
        error = vfs_rename(old_dir->d_inode, old_dentry,
                                   new_dir->d_inode, new_dentry);
 exit5:
--- linux-2.6.15-53.75.orig/fs/namespace.c
+++ linux-2.6.15-53.75/fs/namespace.c
@@ -25,6 +25,12 @@
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
 #include "pnode.h"
+/***** SAKURA Linux start. *****/
+#include <linux/sakura.h>
+/***** SAKURA Linux end. *****/
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 extern int __init init_rootfs(void);
 
@@ -504,6 +510,11 @@ static int do_umount(struct vfsmount *mn
        if (retval)
                return retval;
 
+       /***** SAKURA Linux start. *****/
+       if (ccs_may_umount(mnt))
+               return -EPERM;
+       /***** SAKURA Linux end. *****/
+
        /*
         * Allow userspace to request a mountpoint be expired rather than
         * unmounting unconditionally. Unmount only happens if:
@@ -592,6 +603,10 @@ asmlinkage long sys_umount(char __user *
 {
        struct nameidata nd;
        int retval;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_UMOUNT))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        retval = __user_walk(name, LOOKUP_FOLLOW, &nd);
        if (retval)
@@ -879,6 +894,11 @@ static int do_loopback(struct nameidata 
 
        if (!check_mnt(nd->mnt) || !check_mnt(old_nd.mnt))
                goto out;
+       /***** SAKURA Linux start. *****/
+       err = -EPERM;
+       if (ccs_may_mount(nd))
+               goto out;
+       /***** SAKURA Linux end. *****/
 
        err = -ENOMEM;
        if (recurse)
@@ -963,7 +983,11 @@ static int do_move_mount(struct nameidat
        err = -EINVAL;
        if (!check_mnt(nd->mnt) || !check_mnt(old_nd.mnt))
                goto out;
-
+       /***** SAKURA Linux start. *****/
+       err = -EPERM;
+       if (ccs_may_umount(old_nd.mnt) || ccs_may_mount(nd))
+               goto out;
+       /***** SAKURA Linux end. *****/
        err = -ENOENT;
        down(&nd->dentry->d_inode->i_sem);
        if (IS_DEADDIR(nd->dentry->d_inode))
@@ -1065,6 +1089,11 @@ int do_add_mount(struct vfsmount *newmnt
        err = -EINVAL;
        if (S_ISLNK(newmnt->mnt_root->d_inode->i_mode))
                goto unlock;
+       /***** SAKURA Linux start. *****/
+       err = -EPERM;
+       if (ccs_may_mount(nd))
+               goto unlock;
+       /***** SAKURA Linux end. *****/
 
        newmnt->mnt_flags = mnt_flags;
        if ((err = graft_tree(newmnt, nd)))
@@ -1282,6 +1311,17 @@ long do_mount(char *dev_name, char *dir_
        if (data_page)
                ((char *)data_page)[PAGE_SIZE - 1] = 0;
 
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_MOUNT))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
+       /***** SAKURA Linux start. *****/
+       retval = ccs_check_mount_permission(dev_name, dir_name, type_page,
+                                           &flags);
+       if (retval)
+               return retval;
+       /***** SAKURA Linux end. *****/
+
        /* Separate the per-mountpoint flags */
        if (flags & MS_NOSUID)
                mnt_flags |= MNT_NOSUID;
@@ -1546,6 +1586,10 @@ asmlinkage long sys_pivot_root(const cha
 
        if (!capable(CAP_SYS_ADMIN))
                return -EPERM;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PIVOT_ROOT))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        lock_kernel();
 
@@ -1562,6 +1606,10 @@ asmlinkage long sys_pivot_root(const cha
                goto out1;
 
        error = security_sb_pivotroot(&old_nd, &new_nd);
+       /***** SAKURA Linux start. *****/
+       if (!error)
+               error = ccs_check_pivot_root_permission(&old_nd, &new_nd);
+       /***** SAKURA Linux end. *****/
        if (error) {
                path_release(&old_nd);
                goto out1;
--- linux-2.6.15-53.75.orig/fs/open.c
+++ linux-2.6.15-53.75/fs/open.c
@@ -28,6 +28,13 @@
 
 #include <asm/unistd.h>
 
+/***** SAKURA Linux start. *****/
+#include <linux/sakura.h>
+/***** SAKURA Linux end. *****/
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
+
 int vfs_statfs(struct super_block *sb, struct kstatfs *buf)
 {
        int retval = -ENODEV;
@@ -285,6 +292,10 @@ static inline long do_sys_truncate(const
        if (error)
                goto dput_and_out;
 
+       /***** TOMOYO Linux start. *****/
+       error = ccs_check_truncate_permission(nd.dentry, nd.mnt, length, 0);
+       if (!error)
+       /***** TOMOYO Linux end. *****/
        error = locks_verify_truncate(inode, NULL, length);
        if (!error) {
                DQUOT_INIT(inode);
@@ -337,7 +348,12 @@ static inline long do_sys_ftruncate(unsi
        error = -EPERM;
        if (IS_APPEND(inode))
                goto out_putf;
-
+       /***** TOMOYO Linux start. *****/
+       error = ccs_check_truncate_permission(dentry, file->f_vfsmnt, length,
+                                             0);
+       if (error)
+               goto out_putf;
+       /***** TOMOYO Linux end. *****/
        error = locks_verify_truncate(inode, file, length);
        if (!error)
                error = do_truncate(dentry, length, file);
@@ -610,6 +626,14 @@ asmlinkage long sys_chroot(const char __
        error = -EPERM;
        if (!capable(CAP_SYS_CHROOT))
                goto dput_and_out;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_CHROOT))
+               goto dput_and_out;
+       /***** TOMOYO Linux end. *****/
+       /***** SAKURA Linux start. *****/
+       if (ccs_check_chroot_permission(&nd))
+               goto dput_and_out;
+       /***** SAKURA Linux end. *****/
 
        set_fs_root(current->fs, nd.mnt, nd.dentry);
        set_fs_altroot();
@@ -1141,6 +1165,10 @@ EXPORT_SYMBOL(sys_close);
  */
 asmlinkage long sys_vhangup(void)
 {
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_VHANGUP))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
        if (capable(CAP_SYS_TTY_CONFIG)) {
                tty_vhangup(current->signal->tty);
                return 0;
--- linux-2.6.15-53.75.orig/fs/proc/Makefile
+++ linux-2.6.15-53.75/fs/proc/Makefile
@@ -13,3 +13,6 @@ proc-y       += inode.o root.o base.o ge
 proc-$(CONFIG_PROC_KCORE)      += kcore.o
 proc-$(CONFIG_PROC_VMCORE)     += vmcore.o
 proc-$(CONFIG_PROC_DEVICETREE) += proc_devtree.o
+
+proc-$(CONFIG_SAKURA) += ccs_proc.o
+proc-$(CONFIG_TOMOYO) += ccs_proc.o
--- linux-2.6.15-53.75.orig/fs/proc/proc_misc.c
+++ linux-2.6.15-53.75/fs/proc/proc_misc.c
@@ -629,4 +629,9 @@ void __init proc_misc_init(void)
        if (entry)
                entry->proc_fops = &proc_sysrq_trigger_operations;
 #endif
+       /***** CCS start. *****/
+#if defined(CONFIG_SAKURA) || defined(CONFIG_TOMOYO)
+       printk(KERN_INFO "Hook version: 2.6.15-53.75 2009/03/18\n");
+#endif
+       /***** CCS end. *****/
 }
--- linux-2.6.15-53.75.orig/include/linux/init_task.h
+++ linux-2.6.15-53.75/include/linux/init_task.h
@@ -121,6 +121,10 @@ extern struct group_info init_groups;
        .journal_info   = NULL,                                         \
        .cpu_timers     = INIT_CPU_TIMERS(tsk.cpu_timers),              \
        .fs_excl        = ATOMIC_INIT(0),                               \
+       /***** TOMOYO Linux start. *****/        \
+       .ccs_domain_info = NULL,                 \
+       .ccs_flags = 0,                          \
+       /***** TOMOYO Linux end. *****/          \
 }
 
 
--- linux-2.6.15-53.75.orig/include/linux/sched.h
+++ linux-2.6.15-53.75/include/linux/sched.h
@@ -39,6 +39,10 @@
 
 struct exec_domain;
 
+/***** TOMOYO Linux start. *****/
+struct ccs_domain_info;
+/***** TOMOYO Linux end. *****/
+
 /*
  * cloning flags:
  */
@@ -858,6 +862,10 @@ struct task_struct {
 #endif
        atomic_t fs_excl;       /* holding fs exclusive resources */
        struct list_head        *scm_work_list;
+       /***** TOMOYO Linux start. *****/
+       struct ccs_domain_info *ccs_domain_info;
+       u32 ccs_flags;
+       /***** TOMOYO Linux end. *****/
 };
 
 static inline pid_t process_group(struct task_struct *tsk)
--- linux-2.6.15-53.75.orig/kernel/compat.c
+++ linux-2.6.15-53.75/kernel/compat.c
@@ -24,6 +24,9 @@
 
 #include <asm/uaccess.h>
 #include <asm/bug.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts)
 {
@@ -849,6 +852,10 @@ asmlinkage long compat_sys_stime(compat_
        err = security_settime(&tv, NULL);
        if (err)
                return err;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_SETTIME))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        do_settimeofday(&tv);
        return 0;
--- linux-2.6.15-53.75.orig/kernel/kexec.c
+++ linux-2.6.15-53.75/kernel/kexec.c
@@ -25,6 +25,9 @@
 #include <asm/io.h>
 #include <asm/system.h>
 #include <asm/semaphore.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 /* Location of the reserved area for the crash kernel */
 struct resource crashk_res = {
@@ -918,6 +921,10 @@ asmlinkage long sys_kexec_load(unsigned 
        /* We only trust the superuser with rebooting the system. */
        if (!capable(CAP_SYS_BOOT))
                return -EPERM;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_KEXEC_LOAD))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        /*
         * Verify we have a legal set of flags
--- linux-2.6.15-53.75.orig/kernel/kmod.c
+++ linux-2.6.15-53.75/kernel/kmod.c
@@ -149,6 +149,11 @@ static int ____call_usermodehelper(void 
        /* We can run anywhere, unlike our parent keventd(). */
        set_cpus_allowed(current, CPU_MASK_ALL);
 
+       /***** TOMOYO Linux start. *****/
+       current->ccs_domain_info = NULL;
+       current->ccs_flags = 0;
+       /***** TOMOYO Linux end. *****/
+
        retval = -EPERM;
        if (current->fs->root)
                retval = execve(sub_info->path, sub_info->argv,sub_info->envp);
--- linux-2.6.15-53.75.orig/kernel/module.c
+++ linux-2.6.15-53.75/kernel/module.c
@@ -41,6 +41,9 @@
 #include <asm/uaccess.h>
 #include <asm/semaphore.h>
 #include <asm/cacheflush.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 #if 0
 #define DEBUGP printk
@@ -577,7 +580,10 @@ sys_delete_module(const char __user *nam
 
        if (!capable(CAP_SYS_MODULE))
                return -EPERM;
-
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_USE_KERNEL_MODULE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
        if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0)
                return -EFAULT;
        name[MODULE_NAME_LEN-1] = '\0';
@@ -1886,7 +1892,10 @@ sys_init_module(void __user *umod,
        /* Must have permission */
        if (!capable(CAP_SYS_MODULE))
                return -EPERM;
-
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_USE_KERNEL_MODULE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
        /* Only one module load at a time, please */
        if (down_interruptible(&module_mutex) != 0)
                return -EINTR;
--- linux-2.6.15-53.75.orig/kernel/ptrace.c
+++ linux-2.6.15-53.75/kernel/ptrace.c
@@ -20,6 +20,9 @@
 
 #include <asm/pgtable.h>
 #include <asm/uaccess.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 /*
  * ptrace a task: make the debugger its new parent and
@@ -492,6 +495,10 @@ asmlinkage long sys_ptrace(long request,
        /*
         * This lock_kernel fixes a subtle race with suid exec
         */
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_PTRACE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
        lock_kernel();
        ret = ptrace_get_task_struct(request, pid, &child);
        if (!child)
--- linux-2.6.15-53.75.orig/kernel/sched.c
+++ linux-2.6.15-53.75/kernel/sched.c
@@ -50,6 +50,9 @@
 #include <asm/tlb.h>
 
 #include <asm/unistd.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 /*
  * Convert user-nice values [ -20 ... 0 ... 19 ]
@@ -3603,6 +3606,10 @@ asmlinkage long sys_nice(int increment)
 {
        int retval;
        long nice;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_NICE))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        /*
         * Setpriority might change our priority at the same moment.
--- linux-2.6.15-53.75.orig/kernel/signal.c
+++ linux-2.6.15-53.75/kernel/signal.c
@@ -29,6 +29,9 @@
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
 #include <asm/siginfo.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 /*
  * SLAB caches for signal bits.
@@ -2241,6 +2244,12 @@ asmlinkage long
 sys_kill(int pid, int sig)
 {
        struct siginfo info;
+       /***** TOMOYO Linux start. *****/
+       if (sig && !ccs_capable(CCS_SYS_KILL))
+               return -EPERM;
+       if (sig && ccs_check_signal_acl(sig, pid))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        info.si_signo = sig;
        info.si_errno = 0;
@@ -2299,6 +2308,12 @@ asmlinkage long sys_tgkill(int tgid, int
        /* This is only valid for single tasks */
        if (pid <= 0 || tgid <= 0)
                return -EINVAL;
+       /***** TOMOYO Linux start. *****/
+       if (sig && !ccs_capable(CCS_SYS_KILL))
+               return -EPERM;
+       if (sig && ccs_check_signal_acl(sig, pid))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        return do_tkill(tgid, pid, sig);
 }
@@ -2312,6 +2327,12 @@ sys_tkill(int pid, int sig)
        /* This is only valid for single tasks */
        if (pid <= 0)
                return -EINVAL;
+       /***** TOMOYO Linux start. *****/
+       if (sig && !ccs_capable(CCS_SYS_KILL))
+               return -EPERM;
+       if (sig && ccs_check_signal_acl(sig, pid))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        return do_tkill(0, pid, sig);
 }
--- linux-2.6.15-53.75.orig/kernel/sys.c
+++ linux-2.6.15-53.75/kernel/sys.c
@@ -37,6 +37,9 @@
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/unistd.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 #ifndef SET_UNALIGN_CTL
 # define SET_UNALIGN_CTL(a,b)  (-EINVAL)
@@ -256,6 +259,12 @@ asmlinkage long sys_setpriority(int whic
 
        if (which > 2 || which < 0)
                goto out;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_NICE)) {
+               error = -EPERM;
+               goto out;
+       }
+       /***** TOMOYO Linux end. *****/
 
        /* normalize: avoid signed division (rounding problems) */
        error = -ESRCH;
@@ -483,6 +492,10 @@ asmlinkage long sys_reboot(int magic1, i
                        magic2 != LINUX_REBOOT_MAGIC2B &&
                        magic2 != LINUX_REBOOT_MAGIC2C))
                return -EINVAL;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_REBOOT))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        lock_kernel();
        switch (cmd) {
@@ -1515,6 +1528,10 @@ asmlinkage long sys_sethostname(char __u
                return -EPERM;
        if (len < 0 || len > __NEW_UTS_LEN)
                return -EINVAL;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_SETHOSTNAME))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
        down_write(&uts_sem);
        errno = -EFAULT;
        if (!copy_from_user(tmp, name, len)) {
@@ -1560,6 +1577,10 @@ asmlinkage long sys_setdomainname(char _
                return -EPERM;
        if (len < 0 || len > __NEW_UTS_LEN)
                return -EINVAL;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_SETHOSTNAME))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        down_write(&uts_sem);
        errno = -EFAULT;
--- linux-2.6.15-53.75.orig/kernel/sysctl.c
+++ linux-2.6.15-53.75/kernel/sysctl.c
@@ -45,6 +45,9 @@
 
 #include <asm/uaccess.h>
 #include <asm/processor.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 #ifdef CONFIG_ROOT_NFS
 #include <linux/nfs_fs.h>
@@ -1041,6 +1044,100 @@ void __init sysctl_init(void)
 #endif
 }
 
+/***** TOMOYO Linux start. *****/
+static int try_parse_table(int __user *name, int nlen, void __user *oldval,
+                          void __user *newval, ctl_table *table)
+{
+       int n;
+       int error = -ENOMEM;
+       int op = 0;
+       char *buffer = kmalloc(PAGE_SIZE, GFP_KERNEL);
+       if (oldval)
+               op |= 004;
+       if (newval)
+               op |= 002;
+       if (!op) { /* Neither read nor write */
+               error = 0;
+               goto out;
+       }
+       if (!buffer)
+               goto out;
+       memset(buffer, 0, PAGE_SIZE);
+       snprintf(buffer, PAGE_SIZE - 1, "/proc/sys");
+ repeat:
+       if (!nlen) {
+               error = -ENOTDIR;
+               goto out;
+       }
+       if (get_user(n, name)) {
+               error = -EFAULT;
+               goto out;
+       }
+       for ( ; table->ctl_name; table++) {
+               if (n == table->ctl_name || table->ctl_name == CTL_ANY) {
+                       int pos = strlen(buffer);
+                       const char *cp = table->procname;
+                       error = -ENOMEM;
+                       if (cp) {
+                               if (pos + 1 >= PAGE_SIZE - 1)
+                                       goto out;
+                               buffer[pos++] = '/';
+                               while (*cp) {
+                                       const unsigned char c
+                                               = *(const unsigned char *) cp;
+                                       if (c == '\\') {
+                                               if (pos + 2 >= PAGE_SIZE - 1)
+                                                       goto out;
+                                               buffer[pos++] = '\\';
+                                               buffer[pos++] = '\\';
+                                       } else if (c > ' ' && c < 127) {
+                                               if (pos + 1 >= PAGE_SIZE - 1)
+                                                       goto out;
+                                               buffer[pos++] = c;
+                                       } else {
+                                               if (pos + 4 >= PAGE_SIZE - 1)
+                                                       goto out;
+                                               buffer[pos++] = '\\';
+                                               buffer[pos++] = (c >> 6) + '0';
+                                               buffer[pos++] = ((c >> 3) & 7)
+                                                       + '0';
+                                               buffer[pos++] = (c & 7) + '0';
+                                       }
+                                       cp++;
+                               }
+                       } else {
+                               /* Assume nobody assigns "=\$=" for procname. */
+                               snprintf(buffer + pos, PAGE_SIZE - pos - 1,
+                                        "/=%d=", table->ctl_name);
+                               if (!memchr(buffer, '\0', PAGE_SIZE - 2))
+                                       goto out;
+                       }
+                       if (table->child) {
+                               if (table->strategy) {
+                                       /* printk("sysctl='%s'\n", buffer); */
+                                       if (ccs_check_file_perm(buffer, op,
+                                                               "sysctl")) {
+                                               error = -EPERM;
+                                               goto out;
+                                       }
+                               }
+                               name++;
+                               nlen--;
+                               table = table->child;
+                               goto repeat;
+                       }
+                       /* printk("sysctl='%s'\n", buffer); */
+                       error = ccs_check_file_perm(buffer, op, "sysctl");
+                       goto out;
+               }
+       }
+       error = -ENOTDIR;
+ out:
+       kfree(buffer);
+       return error;
+}
+/***** TOMOYO Linux end. *****/
+
 int do_sysctl(int __user *name, int nlen, void __user *oldval, size_t __user *oldlenp,
               void __user *newval, size_t newlen)
 {
@@ -1066,6 +1163,11 @@ int do_sysctl(int __user *name, int nlen
 
                spin_unlock(&sysctl_lock);
 
+               /***** TOMOYO Linux start. *****/
+               error = try_parse_table(name, nlen, oldval, newval,
+                                       head->ctl_table);
+               if (!error)
+               /***** TOMOYO Linux end. *****/
                error = parse_table(name, nlen, oldval, oldlenp, 
                                        newval, newlen, head->ctl_table,
                                        &context);
@@ -1138,6 +1240,15 @@ repeat:
                                if (ctl_perm(table, 001))
                                        return -EPERM;
                                if (table->strategy) {
+                                       /***** TOMOYO Linux start. *****/
+                                       int op = 0;
+                                       if (oldval)
+                                               op |= 004;
+                                       if (newval)
+                                               op |= 002;
+                                       if (ctl_perm(table, op))
+                                               return -EPERM;
+                                       /***** TOMOYO Linux end. *****/
                                        error = table->strategy(
                                                table, name, nlen,
                                                oldval, oldlenp,
--- linux-2.6.15-53.75.orig/kernel/time.c
+++ linux-2.6.15-53.75/kernel/time.c
@@ -38,6 +38,9 @@
 
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 /* 
  * The timezone where the local system is located.  Used as a default by some
@@ -90,6 +93,10 @@ asmlinkage long sys_stime(time_t __user 
        err = security_settime(&tv, NULL);
        if (err)
                return err;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_SETTIME))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        do_settimeofday(&tv);
        return 0;
@@ -157,6 +164,10 @@ int do_sys_settimeofday(struct timespec 
        error = security_settime(tv, tz);
        if (error)
                return error;
+       /***** TOMOYO Linux start. *****/
+       if (!ccs_capable(CCS_SYS_SETTIME))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
 
        if (tz) {
                /* SMP safe, global irq locking makes it work. */
@@ -235,6 +246,10 @@ int do_adjtimex(struct timex *txc)
        /* In order to modify anything, you gotta be super-user! */
        if (txc->modes && !capable(CAP_SYS_TIME))
                return -EPERM;
+       /***** TOMOYO Linux start. *****/
+       if (txc->modes && !ccs_capable(CCS_SYS_SETTIME))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
                
        /* Now we validate the data before disabling interrupts */
 
--- linux-2.6.15-53.75.orig/net/core/datagram.c
+++ linux-2.6.15-53.75/net/core/datagram.c
@@ -55,6 +55,11 @@
 #include <net/sock.h>
 #include <net/tcp_states.h>
 
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+#include <linux/tomoyo_socket.h>
+/***** TOMOYO Linux end. *****/
+
 /*
  *     Is a socket 'connection oriented' ?
  */
@@ -177,6 +182,12 @@ struct sk_buff *skb_recv_datagram(struct
                } else
                        skb = skb_dequeue(&sk->sk_receive_queue);
 
+               /***** TOMOYO Linux start. *****/
+               error = ccs_socket_recv_datagram_permission(sk, skb, flags);
+               if (error)
+                       goto no_packet;
+               /***** TOMOYO Linux end. *****/
+
                if (skb)
                        return skb;
 
--- linux-2.6.15-53.75.orig/net/ipv4/inet_connection_sock.c
+++ linux-2.6.15-53.75/net/ipv4/inet_connection_sock.c
@@ -24,6 +24,9 @@
 #include <net/route.h>
 #include <net/tcp_states.h>
 #include <net/xfrm.h>
+/***** SAKURA Linux start. *****/
+#include <linux/sakura.h>
+/***** SAKURA Linux end. *****/
 
 #ifdef INET_CSK_DEBUG
 const char inet_csk_timer_bug_msg[] = "inet_csk BUG: unknown timer value\n";
@@ -83,6 +86,10 @@ int inet_csk_get_port(struct inet_hashin
                do {
                        head = &hashinfo->bhash[inet_bhashfn(rover, hashinfo->bhash_size)];
                        spin_lock(&head->lock);
+                       /***** SAKURA Linux start. *****/
+                       if (ccs_may_autobind(rover))
+                               goto next;
+                       /***** SAKURA Linux end. *****/
                        inet_bind_bucket_for_each(tb, node, &head->chain)
                                if (tb->port == rover)
                                        goto next;
--- linux-2.6.15-53.75.orig/net/ipv4/tcp_ipv4.c
+++ linux-2.6.15-53.75/net/ipv4/tcp_ipv4.c
@@ -76,6 +76,9 @@
 #include <linux/stddef.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+/***** SAKURA Linux start. *****/
+#include <linux/sakura.h>
+/***** SAKURA Linux end. *****/
 
 int sysctl_tcp_tw_reuse;
 int sysctl_tcp_low_latency;
@@ -243,6 +246,10 @@ static inline int tcp_v4_hash_connect(st
                local_bh_disable();
                for (i = 1; i <= range; i++) {
                        port = low + (i + offset) % range;
+                       /***** SAKURA Linux start. *****/
+                       if (ccs_may_autobind(port))
+                               continue;
+                       /***** SAKURA Linux end. *****/
                        head = &tcp_hashinfo.bhash[inet_bhashfn(port, tcp_hashinfo.bhash_size)];
                        spin_lock(&head->lock);
 
--- linux-2.6.15-53.75.orig/net/ipv4/udp.c
+++ linux-2.6.15-53.75/net/ipv4/udp.c
@@ -108,6 +108,9 @@
 #include <net/inet_common.h>
 #include <net/checksum.h>
 #include <net/xfrm.h>
+/***** SAKURA Linux start. *****/
+#include <linux/sakura.h>
+/***** SAKURA Linux end. *****/
 
 /*
  *     Snmp MIB for the UDP layer
@@ -146,6 +149,10 @@ static int udp_v4_get_port(struct sock *
                                        result = sysctl_local_port_range[0] +
                                                ((result - sysctl_local_port_range[0]) &
                                                 (UDP_HTABLE_SIZE - 1));
+                               /***** SAKURA Linux start. *****/
+                               if (ccs_may_autobind(result))
+                                       continue;
+                               /***** SAKURA Linux end. *****/
                                goto gotit;
                        }
                        size = 0;
@@ -162,6 +169,10 @@ static int udp_v4_get_port(struct sock *
                                result = sysctl_local_port_range[0]
                                        + ((result - sysctl_local_port_range[0]) &
                                           (UDP_HTABLE_SIZE - 1));
+                       /***** SAKURA Linux start. *****/
+                       if (ccs_may_autobind(result))
+                               continue;
+                       /***** SAKURA Linux end. *****/
                        if (!udp_lport_inuse(result))
                                break;
                }
--- linux-2.6.15-53.75.orig/net/ipv6/tcp_ipv6.c
+++ linux-2.6.15-53.75/net/ipv6/tcp_ipv6.c
@@ -64,6 +64,9 @@
 
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+/***** SAKURA Linux start. *****/
+#include <linux/sakura.h>
+/***** SAKURA Linux end. *****/
 
 static void    tcp_v6_send_reset(struct sk_buff *skb);
 static void    tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req);
@@ -119,6 +122,10 @@ static int tcp_v6_get_port(struct sock *
                do {
                        head = &tcp_hashinfo.bhash[inet_bhashfn(rover, tcp_hashinfo.bhash_size)];
                        spin_lock(&head->lock);
+                       /***** SAKURA Linux start. *****/
+                       if (ccs_may_autobind(rover))
+                               goto next;
+                       /***** SAKURA Linux end. *****/
                        inet_bind_bucket_for_each(tb, node, &head->chain)
                                if (tb->port == rover)
                                        goto next;
@@ -419,6 +426,10 @@ static int tcp_v6_hash_connect(struct so
                local_bh_disable();
                for (i = 1; i <= range; i++) {
                        port = low + (i + offset) % range;
+                       /***** SAKURA Linux start. *****/
+                       if (ccs_may_autobind(port))
+                               continue;
+                       /***** SAKURA Linux end. *****/
                        head = &tcp_hashinfo.bhash[inet_bhashfn(port, tcp_hashinfo.bhash_size)];
                        spin_lock(&head->lock);
 
--- linux-2.6.15-53.75.orig/net/ipv6/udp.c
+++ linux-2.6.15-53.75/net/ipv6/udp.c
@@ -58,6 +58,9 @@
 
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+/***** SAKURA Linux start. *****/
+#include <linux/sakura.h>
+/***** SAKURA Linux end. *****/
 
 DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6) __read_mostly;
 
@@ -88,6 +91,10 @@ static int udp_v6_get_port(struct sock *
                                        result = sysctl_local_port_range[0] +
                                                ((result - sysctl_local_port_range[0]) &
                                                 (UDP_HTABLE_SIZE - 1));
+                               /***** SAKURA Linux start. *****/
+                               if (ccs_may_autobind(result))
+                                       continue;
+                               /***** SAKURA Linux end. *****/
                                goto gotit;
                        }
                        size = 0;
@@ -104,6 +111,10 @@ static int udp_v6_get_port(struct sock *
                                result = sysctl_local_port_range[0]
                                        + ((result - sysctl_local_port_range[0]) &
                                           (UDP_HTABLE_SIZE - 1));
+                       /***** SAKURA Linux start. *****/
+                       if (ccs_may_autobind(result))
+                               continue;
+                       /***** SAKURA Linux end. *****/
                        if (!udp_lport_inuse(result))
                                break;
                }
--- linux-2.6.15-53.75.orig/net/socket.c
+++ linux-2.6.15-53.75/net/socket.c
@@ -97,6 +97,11 @@
 #include <net/sock.h>
 #include <linux/netfilter.h>
 
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+#include <linux/tomoyo_socket.h>
+/***** TOMOYO Linux end. *****/
+
 static int sock_no_open(struct inode *irrelevant, struct file *dontcare);
 static ssize_t sock_aio_read(struct kiocb *iocb, char __user *buf,
                         size_t size, loff_t pos);
@@ -546,7 +551,12 @@ static inline int __sock_sendmsg(struct 
        err = security_socket_sendmsg(sock, msg, size);
        if (err)
                return err;
-
+       /***** TOMOYO Linux start. *****/
+       if (ccs_socket_sendmsg_permission(sock,
+                                         (struct sockaddr *) msg->msg_name,
+                                         msg->msg_namelen))
+               return -EPERM;
+       /***** TOMOYO Linux end. *****/
        return sock->ops->sendmsg(iocb, sock, msg, size);
 }
 
@@ -1099,6 +1109,12 @@ static int __sock_create(int family, int
                family = PF_PACKET;
        }
 
+       /***** TOMOYO Linux start. *****/
+       err = ccs_socket_create_permission(family, type, protocol);
+       if (err)
+               return err;
+       /***** TOMOYO Linux end. *****/
+
        err = security_socket_create(family, type, protocol, kern);
        if (err)
                return err;
@@ -1296,6 +1312,12 @@ asmlinkage long sys_bind(int fd, struct 
                                sockfd_put(sock);
                                return err;
                        }
+                       /***** TOMOYO Linux start. *****/
+                       err = ccs_socket_bind_permission(sock,
+                                                        (struct sockaddr *)
+                                                        address, addrlen);
+                       if (!err)
+                       /***** TOMOYO Linux end. *****/
                        err = sock->ops->bind(sock, (struct sockaddr *)address, addrlen);
                }
                sockfd_put(sock);
@@ -1326,7 +1348,10 @@ asmlinkage long sys_listen(int fd, int b
                        sockfd_put(sock);
                        return err;
                }
-
+               /***** TOMOYO Linux start. *****/
+               err = ccs_socket_listen_permission(sock);
+               if (!err)
+               /***** TOMOYO Linux end. *****/
                err=sock->ops->listen(sock, backlog);
                sockfd_put(sock);
        }
@@ -1377,6 +1402,13 @@ asmlinkage long sys_accept(int fd, struc
        if (err < 0)
                goto out_release;
 
+       /***** TOMOYO Linux start. *****/
+       if (ccs_socket_accept_permission(newsock,
+                                        (struct sockaddr *) address)) {
+               err = -ECONNABORTED; /* Hope less harmful than -EPERM. */
+               goto out_release;
+       }
+       /***** TOMOYO Linux end. *****/
        if (upeer_sockaddr) {
                if(newsock->ops->getname(newsock, (struct sockaddr *)address, &len, 2)<0) {
                        err = -ECONNABORTED;
@@ -1432,7 +1464,12 @@ asmlinkage long sys_connect(int fd, stru
        err = security_socket_connect(sock, (struct sockaddr *)address, addrlen);
        if (err)
                goto out_put;
-
+       /***** TOMOYO Linux start. *****/
+       err = ccs_socket_connect_permission(sock, (struct sockaddr *) address,
+                                           addrlen);
+       if (err)
+               goto out_put;
+       /***** TOMOYO Linux end. *****/
        err = sock->ops->connect(sock, (struct sockaddr *) address, addrlen,
                                 sock->file->f_flags);
 out_put:
--- linux-2.6.15-53.75.orig/net/unix/af_unix.c
+++ linux-2.6.15-53.75/net/unix/af_unix.c
@@ -117,6 +117,9 @@
 #include <linux/mount.h>
 #include <net/checksum.h>
 #include <linux/security.h>
+/***** TOMOYO Linux start. *****/
+#include <linux/tomoyo.h>
+/***** TOMOYO Linux end. *****/
 
 int sysctl_unix_max_dgram_qlen = 10;
 
@@ -781,6 +784,11 @@ static int unix_bind(struct socket *sock
                 */
                mode = S_IFSOCK |
                       (SOCK_INODE(sock)->i_mode & ~current->fs->umask);
+               /***** TOMOYO Linux start. *****/
+               err = ccs_check_mknod_permission(nd.dentry->d_inode, dentry,
+                                                nd.mnt, mode, 0);
+               if (!err)
+               /***** TOMOYO Linux end. *****/
                err = vfs_mknod(nd.dentry->d_inode, dentry, mode, 0);
                if (err)
                        goto out_mknod_dput;